robin nuttall

Yep. At least part of it is genetic. I'm fortunate in both of my current
dogs--they have excellent teeth and never get buildup even though I
don't brush (yeah, yeah, I know I should but I don't).

Viva, at over 7, gets an occasional bit of plaque on the outside of her
largest molar, and I scale it off. Her teeth are a bit worn and somewhat
yellowish with age, but her gums are tight and healthy. Cala, age 2.5,
still has blinding white teeth. No plaque.